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Proceedings
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1. Variable Rate N and P Management for High-value Vegetable Cropping SystemsThe Lower Colorado River Region (LCRR) of Arizona and California and their environs produce more than 90% of the nation’s cool season vegetables during the fall-winter-spring period. Large amounts of N and P fertilizers are currently utilized for maximum yield and quality. Phosphorus fertilizers are applied pre-plant based on a soil test of a composite field sample. Nitrogen is applied by side-dress based on a plant midrib or petiole N analysis, or soil nitrate-N test, from a... C.A. Sanchez, P. Andrade |